Roland TM-2 is a 4 voice .wav drum module to consider if you need more voices.
They run about $150-$175
It has a left/right stereo output. You can pan things hard or soft.
Would give you 12 total sample voices and 4 total outputs with Digitakt. EQ/Comp on board too.
I used it a lot with A4 MK1.
Did whole tracks with just the pair, and nothing else
Have it loaded up with samples from every drum machine imaginable.
The 4 sample voices (16bit, 44.1khz, stereo or mono) can be triggered via CV OR MIDI. Samples are imported by and live on an SDHC card. When triggering via MIDI, they are velocity sensitive. (no midi p-lock of parameters, though)
Choke groups are available and optional, too.
If you are “bad at making kicks”, a sample based solution would be best.